Giant Lemon Sugar Cookies

Directions

1. Preheat oven to 350°. In a large bowl, cream butter and sugars until light and fluffy, 5-7 minutes. Beat in eggs. Beat in lemon zest and juice. In another bowl, whisk flour, baking soda, salt and cream of tartar; gradually beat into creamed mixture.
2. Shape 1/4 cupfuls of dough into balls. Place 6 in. apart on greased baking sheets. Flatten to 3/4-in. thickness with bottom of a measuring cup. Lightly brush tops with water; sprinkle with coarse sugar.
3. Bake until light brown, 12-15 minutes. Remove from pans to wire racks to cool completely. Store in airtight containers.